[INFO] fetching crate rtl-sdr 0.1.5...
[INFO] checking rtl-sdr-0.1.5 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate rtl-sdr 0.1.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rtl-sdr 0.1.5 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtl-sdr 0.1.5
[INFO] finished tweaking crates.io crate rtl-sdr 0.1.5
[INFO] tweaked toml for crates.io crate rtl-sdr 0.1.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-3/source/examples/ex1.rs
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d661a678262ecafff25e07d1da922d67a73670add2c6fc3d6e78c95a1ca91596
[INFO] running `Command { std: "docker" "start" "-a" "d661a678262ecafff25e07d1da922d67a73670add2c6fc3d6e78c95a1ca91596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d661a678262ecafff25e07d1da922d67a73670add2c6fc3d6e78c95a1ca91596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d661a678262ecafff25e07d1da922d67a73670add2c6fc3d6e78c95a1ca91596", kill_on_drop: false }`
[INFO] [stdout] d661a678262ecafff25e07d1da922d67a73670add2c6fc3d6e78c95a1ca91596
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90876157a6afb1103ed19ced1fcfff435d99512dfafedc2361f40bc9d4609cf1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90876157a6afb1103ed19ced1fcfff435d99512dfafedc2361f40bc9d4609cf1", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/examples/ex1.rs
[INFO] [stderr]     Checking rtl-sdr v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub const DEFAULT_BUF_LENGTH: i32 = (16 * 16384);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:46:33
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub const MAX_BUF_LENGTH: i32 = (256 * 16384);
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/ex1.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (m, p, s, mut err) = dev.get_usb_strings();
[INFO] [stdout]    |                   ----^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/ex1.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (mut hw_info, mut err) = dev.get_hw_info();
[INFO] [stdout]    |          ----^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/ex1.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (m, p, s, mut err) = dev.get_usb_strings();
[INFO] [stdout]    |                   ----^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/ex1.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let (mut hw_info, mut err) = dev.get_hw_info();
[INFO] [stdout]    |          ----^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "90876157a6afb1103ed19ced1fcfff435d99512dfafedc2361f40bc9d4609cf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90876157a6afb1103ed19ced1fcfff435d99512dfafedc2361f40bc9d4609cf1", kill_on_drop: false }`
[INFO] [stdout] 90876157a6afb1103ed19ced1fcfff435d99512dfafedc2361f40bc9d4609cf1